From 92ecc4827f9da0df75307732ae47131dbb4bcf3b Mon Sep 17 00:00:00 2001
From: Ilya Matyukhin <ilyamaty@google.com>
Date: Wed, 6 May 2020 00:44:21 -0700
Subject: [PATCH] Add a delay between tests to make them more robust

Bug: 154342874
Test: atest VtsHalBiometricsFaceV1_0TargetTest
Change-Id: I09713b6814ecb9f4ee4a7f568b1f891a94f4e017
---
 .../vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp   | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp b/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp
index 7ac44a4159..78f93af0d3 100644
--- a/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp
+++ b/biometrics/face/1.0/vts/functional/VtsHalBiometricsFaceV1_0TargetTest.cpp
@@ -28,6 +28,7 @@
 #include <chrono>
 #include <cstdint>
 #include <random>
+#include <thread>
 
 using android::sp;
 using android::hardware::hidl_vec;
@@ -144,7 +145,10 @@ class FaceHidlTest : public ::testing::TestWithParam<std::string> {
         ASSERT_EQ(Status::OK, static_cast<Status>(ret2));
     }
 
-    void TearDown() override {}
+    void TearDown() override {
+        // Hack to allow the asynchronous operations to finish on time.
+        std::this_thread::sleep_for(std::chrono::milliseconds(250));
+    }
 
     sp<IBiometricsFace> mService;
     sp<FaceCallback> mCallback;